The Original Investigation titled “Dose-Ranging Effect of Adjunctive Oral Cannabidiol vs Placebo on Convulsive Seizure Frequency in Dravet Syndrome: A Randomized Clinical Trial,”1 published online March 2, 2020, was corrected to fix the spelling of a collaborator’s name to Katherine Moretz, which had been incorrectly given as Katherine Mortez in the Group Members section. This article was corrected online.